import os
import re

from conftest import AUTH, create_pin

BACKUP_RE = re.compile(r"^pinvault-backup-\d{8}-\d{6}\.db$")


def test_bootstrap_ok(client):
    import app
    assert app._bootstrap_ok is True


def test_backup_ran_with_empty_nas_dir(client):
    """Regression: bootstrap must not crash when PINVAULT_NAS_BACKUP_DIR is empty."""
    import app
    assert app.NAS_BACKUP_DIR == ""
    files = os.listdir(app.LOCAL_BACKUP_DIR)
    assert any(BACKUP_RE.match(f) for f in files)


def test_missing_api_key_rejected(client):
    assert client.get("/api/pins").status_code == 401
    assert client.post("/api/pins", json={}).status_code == 401


def test_status(client):
    resp = client.get("/api/status", headers=AUTH)
    assert resp.status_code == 200
    assert resp.get_json()["locked"] is False


def test_list_pins(client):
    resp = client.get("/api/pins", headers=AUTH)
    assert resp.status_code == 200
    assert isinstance(resp.get_json(), list)


def test_create_pin(client):
    data = create_pin(client, label="home", lock_days=14)
    assert data["label"] == "home"
    assert len(data["pin"]) == 4 and data["pin"].isdigit()
    assert len(data["recovery_codes"]) == 4
    assert all(len(c) == 64 for c in data["recovery_codes"])
    assert data["id"] > 0


def test_create_pin_lock_days_validation(client):
    for bad in ("-1", "abc", 1.5, True, None):
        resp = client.post("/api/pins", json={"lock_days": bad}, headers=AUTH)
        assert resp.status_code == 400, f"lock_days={bad!r} should be rejected"


def test_access_locked_pin_denied(client):
    data = create_pin(client, lock_days=30)
    resp = client.post(f"/api/pins/{data['id']}/access", json={}, headers=AUTH)
    assert resp.status_code == 423


def test_access_unlocked_pin(client):
    data = create_pin(client, lock_days=0)
    resp = client.post(f"/api/pins/{data['id']}/access", json={}, headers=AUTH)
    assert resp.status_code == 200
    assert resp.get_json()["pin"] == data["pin"]


def test_access_nonexistent_pin(client):
    resp = client.post("/api/pins/999999/access", json={}, headers=AUTH)
    assert resp.status_code == 404


def test_recovery_code_unlocks_pin(client):
    data = create_pin(client, lock_days=30)
    code = data["recovery_codes"][0]
    resp = client.post(
        f"/api/pins/{data['id']}/access", json={"bypass_code": code}, headers=AUTH
    )
    assert resp.status_code == 200
    assert resp.get_json()["pin"] == data["pin"]


def test_recovery_code_single_use(client):
    data = create_pin(client, lock_days=30)
    code = data["recovery_codes"][0]
    url = f"/api/pins/{data['id']}/access"
    first = client.post(url, json={"bypass_code": code}, headers=AUTH)
    assert first.status_code == 200
    second = client.post(url, json={"bypass_code": code}, headers=AUTH)
    assert second.status_code == 403


def test_invalid_recovery_code(client):
    data = create_pin(client, lock_days=30)
    resp = client.post(
        f"/api/pins/{data['id']}/access", json={"bypass_code": "x" * 64}, headers=AUTH
    )
    assert resp.status_code == 403


def test_delete_unrevealed_pin_refused(client):
    data = create_pin(client, lock_days=30)
    resp = client.delete(f"/api/pins/{data['id']}", headers=AUTH)
    assert resp.status_code == 409


def test_delete_revealed_pin(client):
    data = create_pin(client, lock_days=0)
    assert client.post(f"/api/pins/{data['id']}/access", json={}, headers=AUTH).status_code == 200
    resp = client.delete(f"/api/pins/{data['id']}", headers=AUTH)
    assert resp.status_code == 200
    ids = [p["id"] for p in client.get("/api/pins", headers=AUTH).get_json()]
    assert data["id"] not in ids


def test_backups_listed(client):
    resp = client.get("/api/backups", headers=AUTH)
    assert resp.status_code == 200
    items = resp.get_json()
    assert items, "expected at least the bootstrap backup"
    for item in items:
        assert BACKUP_RE.match(item["filename"])
        assert item["location"] in ("local", "nas")
        assert item["size"] > 0


def test_trigger_backup(client):
    resp = client.post("/api/backups", headers=AUTH)
    assert resp.status_code == 200
    assert resp.get_json()["ok"] is True


def test_restore_invalid_filename(client):
    resp = client.post("/api/backups/evil.db/restore", headers=AUTH)
    assert resp.status_code == 400


def test_restore_missing_backup(client):
    resp = client.post("/api/backups/pinvault-backup-99999999-999999.db/restore", headers=AUTH)
    assert resp.status_code == 404


def test_restore_valid_backup(client):
    filename = client.get("/api/backups", headers=AUTH).get_json()[0]["filename"]
    resp = client.post(f"/api/backups/{filename}/restore", headers=AUTH)
    assert resp.status_code == 200
    assert resp.get_json()["restored"] == filename


def test_list_pins_shape(client):
    data = create_pin(client, label="shape", lock_days=10)
    entry = next(p for p in client.get("/api/pins", headers=AUTH).get_json() if p["id"] == data["id"])
    for key in ("id", "label", "created_at", "lock_until", "locked", "days_remaining",
                "revealed", "bypassed_count", "remaining_codes"):
        assert key in entry, f"missing key {key}"
    assert entry["locked"] is True
    assert entry["remaining_codes"] == 4
    assert "pin" not in entry and "recovery_codes" not in entry